A) 9.15
B) 4.85
C) 9.44
D) 7.87
Correct Answer: D
Solution :
[d] Amino acid is 5% dissociated. Thus, \[[{{A}^{-}}]=\] [conjugate base] \[=0.05\] [HA] = [Amino acid] = 0.95 \[pH=p{{K}_{a}}+\log \frac{[{{A}^{+}}]}{[HA]}\] \[=9.15+\log \left( \frac{0.05}{0.95} \right)=7.87\]You need to login to perform this action.
You will be redirected in
3 sec